Who rides on the rivers

Apologies to J.K Ewers. We had a weekend on the NYC rivers. Saturday it was pretty bleak again but we caught the East River ferry to N. Williamsburg and Dumbo. Sunday it was a glorious spring day and got up to 15 or 17C by 4pm. We caught the ferry from Pier 78 (W. 39th St.) across the Hudson to Hoboken, NJ. Hoboken was the birthplace of which famous 20th century American singer? aka "Hoboken's gift to the world"(Answer in the last picture). It has a great foreshore and several playgrounds with spectacular views of the city. It's also famous for it old railway station and Beaux Arts ticket office.